Photographic silver halide light-sensitive material contaning azo dyes

ABSTRACT

WHEREIN B and B1 are aromatic radicals, A1, D1 and D are acyl radicals, D1 and D2 each is a monocyclic radical bonded to the NH-groups by an acyl group, p, r and s each are 1 or 2, the sum of r and s being at least 3 and the number of azo groups present in the molecule being (r - 1) + (s - 1) + (p - 1) (s - 1). This material contains these dyestuffs especially as yellow image dyestuffs. The dyestuffs have favorable absorption properties, are fast to diffusion and have good resistance to oxidizing agents. Photographic, light-sensitive material, especially for the silver dyestuff bleaching process is provided. This material is characterized in that it contains on a support in at least one layer a linear acylamino azo dyestuff of the formula

United States Patent [191 Loefeel et al.

[45 1 Apr. 16, 1974 PHOTOGRAPHIC SILVER HALIDE I I GHT-SENSITIV E IQQII E BIAL CONTAINING AZO DYES [75] Inventors: Hansrolf Loefeel, Berne; Bernhard Piller, Marly-le-Petit; Alfred Froehlich, Marly-le-Grand, all of Switzerland [73] Assignee: Ciba-Geigy AG, Basle, Switzerland [22] Filed: June 30, 1972 [21] Appl. No.: 267,779

Related U.S. Application Data [63] Continuation of Ser. No. 46,798, June 16. 1970.

abandoned.

301 Foreign Application Priority Data Sept. l, 1967 Switzerland 12299/67 [52] U.S. Cl 96/99, 96/73, 260/152,

[51] Int. Cl G03c 1/10 [58] Field of Search 96/99, 73

[5 6] References Cited UNITED STATES PATENTS 3,178,291 4/1965 Mory et al. 96/99 3,322,543 5/l967 Anderau 96/99 3,443,953 5/1969 Loeffel 96/99 3,455,695 7/1969 Piller 96/99 3,539,348 11/1970 Vetter et al 96/99 3,7l6,368 2/1973 Froehlich et al 96/99 Primary Examiner-J. Travis Brown Attorney, Agent, or Firm-Joseph G. Kolodny; Stanley A. Marcus; Edward McC Roberts 1 port in at least one layer a linear acylamino azo dyewherein B and B are aromatic radicals, A D and D are acyl radicals, D and D each is a monocyclic radical bonded to the -Nl-l-groups by an acyl group, p, r and s each are l or 2, the sum ofr and s being at least 3 and the number of azo groups present in the molecule being (rl) +(s l) (p- 1) (s 1). This material contains these dyestuffs especially as yellow image dyestuffs. The dyestuffs have favorable absorption properties, are fast to diffusion and have good resistance t0 oxidizing agents.

13 Claims, .No Drawings 1 2 PHOTOGRAPHIC SILVER HALIDE 1 LIGHT-SENSITIVE MATERIAL CONT ANING AZO DYES 1 (2-1 )(q-1) (151) HN Dr-N Th1s 1s a continuation of appllcatron Ser; No. 46,798, 5 I l] filed June 16, 1970, now abandoned. soaH q T The present invention provides linear azo dyestuffs of formula FT? 1." a

N=N-BNH (AP) (2-n)(r!)(=1) HN IL i 1 SOaH 1r1 I (1) N H038 II N N=NB1-NH 1'); (E1 L (l l)(s) AOaH JS-I .-1

wherein B and, B, each represents a benzene or naphwherein A,, 12,, B,, D, D,, D and p have the meaning s thalene residue bonded in the 1,4-position to the -N given above and q is 1 or 2. N- and the -NH- group, A,, E, and D each represents Especially valuable linear azo dyestuffs correspond an acyl residue, D, and D each represents a monocyto the formula clic residue bonded to the -NH- groups by an acyl group, and p, r and .1 each represents an integer having a'value of at most 2, with the sum of rand s being at (3) H038 least 3 and the number of azo groups present in the molecule being e: 1, )1 (s 1 (p 1 r 1 (s r) N=N"B"NH "f?" 1). T) m-N If the sum of r s is 3, then the dyestuffs of formula H (1 are monoazo dyestuffs. If the sum of r s is 4, that so,-,H q L 4 t -mq-i) is to say both r and s have a value of 2, then it is further necessary to differentiate the dyestuffs of formula (1) wherein p 1 from those wherein p 2. 40 wherein B represents a benzene residue which is If p has a value of l, the dyestuffs of formula 1) repbonded in the 1,4-position to the -N N- and the -NH- resent disazo dyestuffs. If p 2, the dyestuffs of forgroup, A, and E each represents an acyl residue demula (1) represent linear trisazo dyestuffs. rived from a carboxylic acid or sulphonic acid, prefera- By the term linear azo dyestuffs or linear trisazo dyebly each representing an, Ri-C 0f zzstuffs there are to be, understood dyestuffs which con- 5 wherein R, represents a hydrogen atom, an alkyl, alktain all the azo groups in the following schematic aroxy, carboxyalkyl or vinyl residue or a benzene, furan, rangement in the mo ecule! thiophene or pyridine residue each of which may be N N N N N N t substituted and R represents an alkyl orabenzene res- Azo dyestuffs having branched molecular chains idue which may be substituted, D represents a -CO- which, for p Sh an arrangement of the 320 residue, a residue of an aliphatic, aromatic or heterocygroups in the molecule of the type indicated below, are clic dicarboxylic acid, a residue of an aromatic disulnot to be ullderstood unde th term lineal azo y phonic acid, 1,3,5-triazine or pyrimidine residue which stuffs of linear trisazo. dyestuffs: may each be substituted, D and 1)., each represents a benzene residue bonded to the -NI-lgroups via a cari bonyl or sulphonyl group and p and q are each integers '..::.....N=N i havmg a value of at most 2, the number of azo groups present in the molecule being q (p 1) (q 1). 1 D preferably corresponds to a -C0-, -CO-F-CO- or -SO -F,-SO -residue, wherein F represents an alkylene residue having 2 to 10 carbon atoms, a benzene residue Depending on the type, of linkage and the meanings of which may be substituted by an amino, nitro, sulphonic B, B,, A,, E,, D, D, and. D, the dyestuffs of formula (1 acid or sulphonamide group, a furan, thiophene or pyriare symmetrical or asymmetrical linear azo dyestuffs. dine residue, the residue of a diphenylsulphone or a In the pairs B and B,, A, and E,, D, and D, the two resi- -CH CH- residue, and F, represents a benzene residues may thus, in each case, either be identical or difdue, which may be substituted.

ferent from one another. The residue -D -N N-D,- prefer-ably corresponds to Preferred linear azo, dyestuffs are those of formula the formula wherein A and D have the meanings given above, U represents a hydrogen atom, a chlorine atom. an alkyl. alkoxy, hydroxyalkoxy or alkoxyalkoxy group each having I to carbon atoms in the alkyl residue, an oxy 5 acetic acid group or an acylamino group, wherein acyl N=N represents the residue of an aliphatic carboxylic acid 7 r r having 1 to 5 carbon atoms or benzenecarboxylic pyridin ecarboxylic, furanecarboxylic or thiophenecarboxylic acid residue. which may each be substituted and V represents a hydrogen atom or an alkyl. alkoxy or acylamino group. wherein acyl has the meaning given above.

Very suitable disazo dyestuffs of fomiula l0) corre- (4b) SOP D may optionally also represent a -CO-F -SO residue, wherein F represents a benzene residue, which may be substituted, a methylene residue or a halogenomethylene residue.

Monoazo dyestuffs preferably correspond to the formula spond'to the formulae l5 (5) H03? 7 (A2) 0ij-N=N-B NH -NH IiOBS HaC I g I l s 03H WM N=NC NH f 0 wherein B A and E have the meanings given above. a-HN OCH1 2 H Disazo dyestuffs preferably correspond to one of the AOZH 2 formulae (6) to (8): and

(6) H03 s soar zl N=N-BzNH-DHNBN=N NH NH S 03H H03 S rl NHB r-N=N N=NB z-NH NHD-HN HO; 8 s 0 H (8) H03? $0311 z) N=NBzNH-DHN .e v -N=N-B2NH- wherein D" represents a 1,3,5-triazine or a pyrimidine residue each of which may be substituted and A E H038 U1 D and B have the meanings given above. I I GO Valuable disazo dyestuffs of formula (6 correspond to the formula CI-IaOO-HN (9) T U I S OaH 2 N=N NH- D V whereln A represents an acetyl, benzoyl or p-toluyl residue, U represents an acetylamino or carboxypros 03H pionylamino residue and F represents a residue of forand especially to the formula mula I D I AFHN v L or I \N/ s o SOaH J2 Valuable disazo dyestuffs of formula (6) correspond to the formula (13) $0.12" Az-NH N=N j) V NH and especially to the formula 4) Ill fOaH v NH- wherein A D, U and V have the meanings given above.

Valuable disazo dyestuffs of formula (8) correspond to the formula and especially the forrnula 16 nors Az-NII SOull wherein D' represents a 1,3,5-triazine residue which may be substituted by a chlorine atom or a hydroxyl or alkoxy group, and A B U and V have the meanings given above. D' mayoptionally also be represented by a 1,3,5-triazine residue which is substituted by an alkylamino or phenylamino group.

Alkyl radicals of any kind in the present dyestuffs preferably have 1 to 10 carbon atoms, more particularly 1 to carbon atoms and above all 1 to 3 carbon atoms. Any halogen atoms in the present dyestuffs preferably are bromine, iodine and above all chlorine.

The acyl residues A,, E A and E are derived from anhydrides and especially from halides of monobasic acylation components. The following may be mentioned as examples of halides: Acctyl chloride, propionyl chloride, 3-sulphobenzoyl chloride, benzenesulphonyl chloride, p-toluenesulphonyl chloride, terephthalic acid monomethyl ester-monocarboxylic acid chloride, chloracetyl chloride, 3-chloropropionyl chloride, 2,3- dichloropropionyl chloride, acrylic acid chloride, phenyl-acetic acid chloride, benzoyl chloride, p-

acid ethyl ester or chloroformic acid diethylamidc. Anhydrides from which the acyl residues are derived are for example acetic anhydride or anhydrides of aliphatic carboxylic acids having 3 to 5 carbon atoms.

The acyl residues D, D, D and D' are also derived from anhydrides and especially from dihalides of dibasic acylation components.

The following may, for example, be mentioned as anhydrides: Succinic anhydride, chlorosuccinic anhydride or glutaric anhydride.

Preferably, however, the bridge members D, D, D", D', -D,-N=N-D and -D -N N-D are derived from dihalides, namely, for example from, phosgene, thiophosgene, succinic acid dichloride, glutaric acid dichloride, adipic acid dichloride, pimelic acid dichloride, chlorosuccinic acid dichloride, 2,3- dichlorosuccinic acid dichloride, fumaric acid dichloride, terephthaloyl chloride, isophthaloyl chloride, 5 nitroisophthaloyl chloride, thiophene-2,5-dicarboxylic acid dichloride, furane-2,5-dicarboxylic acid dichloride, pyridine-2,idicarboxylic acid dichloride, pyridine-2,6-dicarboxylic acid dichloride, pyridine-3,5- dicarboxylic acid dichloride, azobenzene-3,3-

.dicarboxylic acid dichloride, 4,4'-dichlor-azobenzene- -3,3-dicarboxylic acid dichloride, azoben'z ene-4,4'-

SOzH

diphenylsulphide-4.4-dicarb0xy|ic acid dichloride. cy-

anuric chloride. 4,6-dichloropyrimidine. lphenyl-3,5- dichloro-sym. triazine or l-methoxy-3,5dichloro-sym. triazine.

The residues B, and B are derived from coupling components for the manufacture of azo components. The following amines may here be mentioned as examples: aminobenzene, l-amino-Z- or -3-methylbenzene, l

nitrobenzoyl chloride, 4-methylbenzoyl chloride, 3-triamino-2,5-or -2,6-dimethylbenzene, l-amin -2- or -3- fluoromethyl-benzoyl chloride, 4-chlorobenzoyl chloride, 4-methoxybenzoyl chloride, furoyl chloride, thienyl chloride, nicotinic acid chloride, chloroformic methoxybenzene, l-amino-2-ethoxybenzene, l-amino- 2-B-hydroxyethoxy-S-methylbenzene, l-amino-2-B- hydroxyethoxybenzene, l-amino-2-B-hydroxyethoxy- -clilorobenzene, 1amino-2-,8 methoxyethoxy-5- methylbenzene, 1-amino-3-acetylaminobenzene, 1- amino-3-propionylaminobenzene, l-amino-3-nbutyrylaminobenzene 1-amino-3 isobutyrylaminobenzene, 1-amino-3-acetylamino-6- methylbenzene, l-amino-3-acetylamino-6- methoxybenzene, l-amino-Z-acetylamino-S methylbenzene, l-amino-2-acetylamino-5- methoxybenzene, l-amino-Z-methoxy-S- methylbenzene, l-amino-2-methyl-5-methoxybenzene, l-amino-2-chloro-S-methoxybenzene, 1-amino-2- methoxy-S- chlorobenzene, l-amino-2-methyl-5- chlorobenzene 1 amino 2,5 dimethoxybenzene, l-amino-2,5- diethoxybenzene, l-amino-2,S-diacetylaminobenzene, 3-aminophenyl-urea, 3-amino-4-methyl-phenoxyacetic acid, 1-aminonaphthalene-5-sulphonic acid or 1- aminonaphthalene.

The acylamino dyestuffs of formulae (1) to (3) may be manufactured according to various processes.

The present invention thus provides a process for the manufacture of monoazo dyestuffs of formula (5 which comprises condensing, in a molar ratio of 1:1,

aminoazo dyestuffs of formula with an anhydride or especially monohalide of an acid of the formula A -OH or E,-OH, wherein A E and B have the meanings given above and n is l or 2. Linear azo dyestuffs of formula wherein A E 8,, D, D D and p have the meanings given above are manufactured according to three different processes. One process comprises condensing a halide of a compound of formula Lamino-S-methoxybenzene with an aminoazo dyestuff of formula GOT EETST i N=N-Br-NH (-11) l)(nl) HN (-E1) 2 n l SOaH WEEEIJA}, E B D D D and p have the meanings mentioned and n is 1 or 2.

Another process comprises condensing an azo dyestuff of formula of the formula A,-OH and/or E -OH, wherein A E,,

B D, D D and p have the meanings mentioned and nandmis1or2.

A third process comprises condensing an aminoazo dyestuffs of the formula OaH in a molar ratio of 2:1 with a halide of an acid of the formula 23 if 110 1 512 5 H0 I LD2-N (v-i) wherein A,, E,, B,, D, D,, D and p have the meanings given above.

The condensations are effected according to methods known per se and are advantageously carried out in a polar solvent, for example, water or especially in a polar organic solvent, preferably in dimethylformamide, diethylacetamide-or N-methylpyrrolidone.

It can also be advantageous to carry out the condensation in the presence of an acid-binding agent, for ex- 5 5 ample, an alkali metal carbonate. Solvents, for example, pyridine or especially an N-methylpyrrolidone itself already have an acid-binding action.

The linear azo dyestuffs of formula (1) may be used for various purposes, for example in photographic materials and in these are especially advantageously as OaH image dyestuffs for the silver dyestuff bleaching process. In accordance herewith, valuable photographic materials can be manufactured in the usual manner which is in itself known these materials containing, on a layer support, at least one layer with a dyestuff of formula (1).

In particular, these dyestuffs may be present in a multi-layer material which contains, on a layer support, a

layer dyed with greenish-blue dyestuff which is selectively sensitive to red, on top of this a layer dyed purple which is selectively sensitive to green and finally a layer dyed yellow with a dyestuff of formulae (1) to (3), preferably (5) to (16), which is sensitive to blue. It is, however, also possible to introduce the dyestuffs of formula (1) into an auxiliary layer or especially into a layer adjacent to the light sensitive layer.

The dyestuffs are in general very resistant to diffusion and can be successfully reduced to give harmless decomposition products which can easily be washed out. They offer very wide possibilities for varying the spectral properties. The dyestuffs are especially distinguished by the purity of the colour shades and by high colour strength.

The extremely favourable course of the spectral absorption curve permits these yellow dyestuffs to be combined in many ways with one each of a suitable purple and bluish-green dyestuff. Grey shades which appear neutral to the eye over the entire density range are thereby achieved.

The dyestuffs of formula (1) are furthermore distinguished by outstanding resistance to oxidising agents such as are used in photographic baths for the oxidation of silver.

The following Examples illustrate the invention.

Unless otherwise states the parts denote parts by weight and the percentages by weight.

EXAMPLE 1 154 parts of 6-acetylamino-2-aminoaphthalene-4,8- disulphonic acid obtained by acetylation of 6-aminonaphthalene-4,8-disulphonic acid, nitration and subsequent reduction of the nitro group with sodium sulphide are dissolved in 2,500 parts of water containing 500 parts of ice. 80 parts of 30% strength hydrochloric acidand 80 parts of 4N sodium nitrite solution are then added at 0 C, whereupon the diazonium salt precipitates in theform of a white emulsion. After vigorous stirring for 2 hours the excess nitrite is destroyed with sulfamic acid.

57 parts of 3-amino-4methoxy-l-methylbenzene are dissolved in 3,000 parts of water and 30 parts of 30% strength hydrochloric acid by warming to 55 C and cooled to 0 C. The coupling component is then added to the diazo component. After buffering with the requisite quantity of potassium acetate, the coupling starts. The mixture is stirred over night and filtered. The filter cake is suspended in 1,000 parts of water and 200 parts of 2N sodium carbonate. After adding a further 3,500 parts of water the mixture is heated to 65 C, whereupon it dissolves. The dyestuff solution is clarified by filtration and mixed with 200 parts of sodium chloride. The mixture is cooled to 20 C, filtered, and the filter residue is washed with 4,000 parts of acetone. The product is dried at 60 C and 141 parts of an orange-red powder are obtained.

6 parts of the azoamine obtained above are dissolved in 200 parts of water together with 6 parts of crystalline sodium tetraborate. On the other hand, 1 part of thiophenedicarboxylic acid dichloride is warmed in 120 parts of acetone and poured all at once into the solution of the azoamine. The mixture is stirred for 20 hours at room temperature, then warmed to 60 C and 20 parts of 7N potassium acetate solution are added.

The precipitated dyestuff is filtered off and the filterresidue dissolved in 1,500 parts of water at C; after filtering the solution to clarify it, 250 parts of 7N potassium acetate solution and 1,000 parts of methanol are added. The product is filtered and washed with methanol. After drying 4.8 parts of dyestuff are obtained.

The same dyestuff is obtained if 2-nitro-6- aminonaphthalene-4,8-disulphonic acid is coupled with 3-amino-4-methoxy-1-methylbenzene, the coloured amine linked to thiophenedicarboxylic acid dichloride and the two terminal nitro groups reduced and acety lated.

In both cases the potassium salt of the dyestuff No. I of table I is obtained.

Dyestuffs IV to XVI and XIX to XXXVIII of table I are manufactured analogously. Dyestuff II is manufactured similarly to the reaction with cyanuryl chloride in Example 10.

EXAMPLE 2 1 part of azoamine obtained by coupling of 6- acetyIamino-Z-aminonaphthalene-4,8-disulphonic acid with 2-acetylamino-5-methoxy-aniline is warmed in 5 parts of N-methyl-pyrrolidone and 0.5 part of pyridine and the solution filtered to clarity it. 0.2 part of tereph thaloyl dichloride in the solid form are added at 50 C and the mixture is stirred for 30 minutes at the same temperature, cooled to room temperature, and the dyestuff precipitated by means of 5 parts of 20% alcoholic potassium acetate solution and 5 parts of methanol. The dyestuff is filtered off, boiled in methanol, filtered and the residue washed with methanol. 0.3 part of the potassium salt of the dyestuff No. XVIII of Table I are obtained.

1 EXAMPLE 3 10 parts of azoamine which have been obtained by coupling 6-acetylamino-2-aminonaphthalene-4,8- disulphonic acid to 3-amino-4-methoxy-1- methylbenzene are dissolved in 500 parts of water together with 5 parts of crystalline sodium tetraboratc. 10 parts of 30% strength sodium hydroxide solution are added pH 10], the mixture is warmed to 50 C and phosgene is introduced until a pH valve of 3 is reached. The mixture is then again adjusted to a pH value of 10 with sodium carbonate and phosgene again introduced until a pH value of 3 is reached. The mixture is adjusted to pH 7 to 8 with sodium carbonate and warmed to 60 C after adding 1,500 parts of water. After filtration to clarify the solution, parts of methanol and 50 parts of 7N potassium acetate solution are added. The mixture is filtered and the residue dissolved in 2,000 parts of water at 60 C and 100 parts of methanol and 100 parts of 7N potassium acetate solution'are added. The mixture is filtered and the residue is boiled with methano] and dried in vacuo at 60 C. 6 parts of the potassium salt of the dyestuff III of Table I are obtained.

The manufacture of the dyestuff No. XVII and XXXIX is effected analogously.

Before the phosgenation, in the manufacture of dyestuff No. XXXIX, the azoamine obtained by coupling 6-acetylamino-2-aminonaphthalene-4,8-disulphonic acid with 1-amino-3-carboxypropionylaminobenzene is reacted with nitrobenzoyl chloride and the nitro group is reduced.

v m TABLE 1 B1 and D in formula Absorption maximum (nm.) in- 1103s N=NB1NH D1 CHa-CO-NH H30] Gela- DMF Compound number B; D tine 1: 1

I CH H 460 420 OC s CO OCH;

II Same as above 422 460 CN N C-Cl -O C-CH:OHC O- 472 422 I 463/490 409 0 Ci l0 0 VII d0 418 422 02 S- N=N S 02 VIII -(10 416 414 O: S- N=N --S Or- IX ..d0 448 404 -0 C N=N C 0- X ?CH3 Same as above 430 422 NH(]'|JO OO N=N OOH:

I 0- O CHzGHaOI-I XII Same as above 406 403 m OC- N) OO XIII d0 439 410 O C- C 0- XIV d0 434 406 OC CO XV d0 469 426 OCCH=CHCO- B1 and D 111 formula Absqrption maxunum N:N-B1NH- D1 CH;CONH

SO H 2 H2O/ Gela- DMF Compound number B; D; tine 1:1

xv: .TIIIIT --do U """""46I "45" OCL L00 XVII .du 00- 484 432 Rik T? OC- CO- XIX Same as abqve m 397 406 XXI 0 cmcoon Q 399 400 XXII Same as above M4 396 O C C 0- XXIII Q Same as above 422 408 HNJJ 0 0H;

-Ifsfii g above. 1L-. Q. 430 412 xxv .do 404 40s XXVI do 422 406 XXVII O Same as above 405 400 XXVIII Same as above 404 400 O O C O XXIX --do 409 402 XXXHI Q xxxvn -.do I -0 cl V Table l-Continued B1 and D1 in formula Absorption maximum (nm.) in- HO3|S N=NB1NH CHaC ONH H20/ Gela- DMF Compound number 131 D1 tine 1:1

kkirjf H if same'ltligjl. .f Q 408 351" XXXI Same as above 416 400 -0 Cl CO- XXXII do m 396 394 XXXVIII do 425 400 -O GAO-C O XXXIX d0 -C O- 430 412 EXAMPLE 4 benzoylamino-naphthalene-4,8-disulphonic acid or 6- A procedure analogous to that described in Examole 1 is followed for the manufacture of the dyestuffs of formulae XL to XLVIII of Table II. However, the 6- D1 Ar-HN CHzCHzOH p-toluyl-aminonaphthalene-4,8-disulph0nic acid, respectively, are used as the diazo component instead of the 6-acetylamino-2-aminonaphthalene-4,8- disulphonic acid.

HOaS

Absorption maximum (nm.) in- SOQH 2 v Compound number A1 D tine 1:1

A I -0 o-L c o- Table ll-Continued A1 and D1 in the formula HOaS 1 Abso tion AiHN 01120112011 maxn iimn (nm.) in- S 11 2 H2O] Ge1a- DMF Componnd number A1 DI tine 1:1

M Same as above w 430 404 -O O -C 0- XLII d0 440 410 XLIII .-do H 455 415 O C CO- XLI" do 402 408 XLV 406 460 -O C N --C O XLVI Same as above 412 405 CO -C 0- XLVII .do 442 408 -O C- CO- XLVIII .d0 408 406 EXAMPLE 5 35 parts of 6-nitro-2-naphthylamine-4,8-disulphonic acid are suspended in 500 parts by volume of dry pyridine and mixed at the boiling point, during minutes,.

with 84 parts of p-toluenesulphonic acid chloride added in portions. After complete reaction, that is to say after 1 to 2 hours, the p-toluenesulphonic acid derivative is precipitated by means of strength hydrochloric acid in the form of a yellow powder. The yield is almost quantitative. i

50 parts of this pftoluenesulphonic acid derivative of formula are dissolved in 200 parts by volnnie of water at a pH value of 8 and at 4Q C. 0.5 part of FeCl are added followed by a solution of 37 parts of Na S 9H O in 90 parts by volume of water added during 5 minutes with good stirring. The mixture is stirred at 40 C and after 2 hours a further 20. parts of Na S Q11 0 are added to complete the reaction.

l SOaH The reaction solution which now contains the amine of the p-toluenesulphonic acid derivative is further processed in the usual manner, by diazotisation and coupling onto 2-methoxy-5-methylaniline, to give the amino-.monoazo dyestuff of formula.

1.2 parts of this amino-monoazo dyestuff, well-dried, are dissolved in 35 parts by volume of anhydrous N-methyl-S-pyrrolidone and 0.2 part of isophthaloyl chloride are added. The mixture is stirred at room tem- SOBH perature and the course of the reaction is. followed by TABLE III D1in the compound of Formula thus obtained is benzoylated according to the method described below.

Hols C|)CHa NH- D1 Absorption maximum moO-s OrNH Hi0 (nm.) in- Gela- HzO/ Dyestufi SOzH tine DMF (number 2 1:1

XLIX 414 420 0C CO- -0 cl loos LII 404 400 -02s -N=N -so2 EXAMPLE 6 After the reduction of the nitro compound to the The dyestuff No. LllI of Table IV can be manufactured according to two different methods:

A. parts of 6-nitro-2-naphthylaminc-4,8- disulphonic acid are dissolved in 500 parts by volume of water under neutral conditions and phosgenated under weakly alkaline conditions with the requisite amounts of crystalline sodium tetraborate being added in portions. Finally, the mixture is heated to 60 C during 10 minutes and the product is filtered off at C and recrystallised from water. 33.4 parts (92%) of pure urea derivative are obtained in the form of a yellow powder.

The two nitro groups of this urea derivative are reduced to amine groups as described in Example 4. The diamine thus produced is tetrazotised and coupled onto 2-methoxy-5-methylaniline. A solution of 10 parts of the diaminodisazo dyestuff of formula HOaH 2 thus obtained, in 250 parts by volume of N-methyl- S pyrrolidone, is then treated with 8.3 parts by volume of benzoyl chloride, the mixture is stirred at room temperature until it has completely reacted, and the resulting dyestuff is precipitated in the form of a yellow powder m by means of 2,000 parts by volume of acetone; The yield of dyestuff No. L111 is 85%. The dyestuffs No. LIV and LV of Table IV are manufactured analogously.

B. 6-nitro-2-naphthylamine-4,8-disulphonic acid is diazotised in the usual manner, coupled with 2- methoxy-S-methylaniline, and the monoazo dyestuff amine according to the method described in Example 4, 1.1 part of the amino-monoazo dyestuff of formula soul thus produced are phosgenated according to the method described under A. 0.8 part of the dyestuff No. LIII are obtained in the form of a yellow powder.

EXAMPLE 7 EXAMPLE 8 The dyestuff No. LVII is obtained analogously to example 6, method A. The starting product of formula Hoa S0311 is obtained in the following manner:

35 parts of 6-nitro-2-naphthylamine-4,8-disulphonic acid are suspended in 500 parts by volume of dry nitrobenzene and treated with 50 parts by volume of N,N- dimethylamine, 100 parts by volume of dry acetone and 10.5 parts of thiophene-2,5-dicarboxylic acid dichloride. The reaction vessel is then filled with glass beads of mm diameter to the extent that there is a mm supernatant layer of liquid. The mixture is stirred at 80 to 85 C under a reflux condenser until the reaction is ended (24 to 48 hours), with the addition of the acid dichloride being repeated twice more at intervals of 10 hours. The reaction product is filtered off, suspended in 1,000 parts by volume of 2N sodium carbonate solution, filtered off, thoroughly washed with water and ethanol and dried in vacuo at 60 C.

40 parts of the acylated product of formula (e) are obtained in the form of a yellow powder.

TABLE IV 44 parts of azoamine obtained by coupling 2-nitro-6- aminonaphthalene-4,8-disulphonic acid onto B-amino- 4-hydroxyethoxy-l-methylbenzene are dissolved in 1,250 parts of water. parts of acetic anhydride are added, whereupon the reaction mixture becomes viscous. After one hour the thin layer chromatogram shows that as yet very little acetylated product is pres- 3.1 parts of azoamine obtained by coupling of 2- amino-6-acetylaminonaphthalene-4,8-disulphonic acid onto 3-amino-4-methoxy-methylbenzene, are dissolved in 100 parts of water, together with 3 parts of crystalline sodium tetraborate, by warming to 50 C. After cooling to 20 C a mixture of 12 parts of benzoyl chloride and 15 parts of acetone is added. In order to maintain a neutral medium, a further 3 parts of crystalline sodium tetraborate and 10 parts of a strength solution of sodium hydroxide are added. After stirring for 14 hours at room temperature the mixture is warmed to 80 C and precipitated with 10 parts of 7N potassium acetate solution, whereupon a light brown precipitate is produced. The mixture is filtered, the residue dissolved in 400 parts of water at 60 C, the solution is filtered to clarify it and treated with 5 parts of 7N potassium acetate solution and 400 parts of methanol. The mixture is filtered and the residue is suspended in methanol, filtered and dried in vacuo at 60 C. 1.5 parts of the potassium salt of the dyestuff mula .... "MM" NRE\- A1 and D1 in the compound of Formula CH S 03H A1-I-IN 3N=N Dr Absorption H 00 -NH- maximum (mm) in- H035 2 H20/ Dyestufi Gela- DMF number 111- D1 tine 1:1

LIII C 0- 429 418 o o- I LIV. I, c 0 416 LV C 0- 412 CH:; S 02- LVI CHaCO- CO 420 LVII i 426 410 O C- s -O O- 45 1am. add are'er' ziceiihrihydridie saw added dropwise at 60 to C over the course of 3 hours and the EXAMPLE 9 mixture is kept at pH 5 by simultaneous addition of 70 parts of a 30% strength solution of sodium hydroxide. The reaction mixture gradually redissolves and the colour becomes visibly lighter. The mixture is precipitated with 200 parts of 7N potassium acetate solution and v parts of methanol and the product filtered off and washed with methanol. 33 parts of an orange powder are obtained. 30 parts of the product obtained above are dissolved in 1,000 parts of water at 40 C. 10 parts of sodium sulphide (100%) in 5 0 parts of water are then added in portions. The reaction is ended after 3 hours. The product is precipitated with 200 parts of 7N potassium acetate solution. After filtering and drying 24 parts of the potassium salt of the azo dyestuff of for- (l) SIOaH I O GHzCI-I: O H

HOaS

of the pgtassium salt of the dyestuff 3.1 parts of azoamine obtained by coupling Z-amino- 6-acetylamino-naphthalene-4,8-disulphonic acid with 3-amino-4-methoxy-l-methylbenzene are dissolved in 250 parts of water together with 5 parts of crystalline sodium tetraborate. The mixture is cooled to 0 C and 1 part of cyanuryl chloride dissolved in 50 parts of acetone is added. After minutes reaction time the primary condensation is ended. (Check by thin layer chromatography). The mixture is now warmed to C and 3.1 parts of the intermediate product of formula (f) are added. After 12 hours reaction time only a little diazotisable amine remains detectable in a thin layer chromatogram. 300 parts of water are added and the mixture warmed to C, whereupon dissolution occurs. 30 parts of 7N potassium acetate solution and 100 parts of methanol are then added. A product is filtered off, washed with methanol, and the residue dissolved in 500 parts of water at 50 C. The dyestuff is again precipitated by adding 30 parts of 7N potassium acetate solution and 100 parts of methanol. The mixture is filtered and the residue suspended in 400 parts of methanol, again filtered off and dried in vacuo at C. 3.5 parts CHaC ONH having similar properties is obtained, but in the second condensation the mixture is, after 24 hours reaction at 50 C, warmed to C for a further 2 hours.

Table V 1.1 parts of the amino-monoazo dyestuff of formula (f), described in Example 9, are dissolved in 25 parts of anhydrous N-methyl-S-pyrrolidone, 0.25 parts of thiophene-2,5-dicarboxy1ic acid dichloride are added, the mixture is stirred for 3 hours at room temperature,

20 30 parts of water are added, and the reaction product is precipitated by means of 35% strength hydrochloric acid, filtered 0E and thoroughly washed with acetone. The dyestuff of formula LXI is obtained in almost H033 OCHzCHzOH quantitative yieldin the form of a black powder.

The dyestuffs LXII to LXV of Table VI are obtained 35 n an analogous manner.

N 5cm I so H C :1 H0 8 H3 1 I/ n I N=N NHC CHN CH1 CHaC O NH H30 0 =N- -NH0 0 CH:

S OaH HOa 0CH1CH1OH 'TQEEVI D1 in the compound of Formula (311 S 03H CHiC ONHON=N Absorption maximum (1) D1 (nm.) in- CH2CH2O H NH- HzO/ Gela- DMF Dyestufi number S 0311 2 tine 1:1

LXI |-l 436 414 O C C O LXII P 418 410 -00 i J-oo- LXIY -0 c s 004: o-

EXAMPLE l2 4. Silver bromide emulsion in gelatine, sensitive blue, containing the yellow dyestuff No. ll! of Table l.

0 7 a t b l f 1 h l The gelatine layers may further contain additives y Y g a 0 strerllgt aqueous such as wetting agents, hardeners and stabilisers forthe g 3 yesm I of Table are added at 40 C 5 silver halide. In other respects the procedure is that the go 3p3arts ltay lyolunlie of a f6% stfcngth alquco individual layers contain, per square metre of film, 0.5

3522 5 $133.2 $52.2:insist: 3 i of i i i i romi e correspon mg to g o si ver. 8 g i pa t bi f m oflan aquejous g f h d This film is exposed to red, green and blue copying g i 33 fi? O at 10 light under a coloured diapositive. Thereafter the copy 23: gig g; y i d "g' cast is developed in accordance with the following instruca cmgasspae an fie tions;

The material is exposed behind a step wedge l. 6 minutes development in a bath which per litre of Silver image is developed a l'methylamino' water contains 50 g of anhydrous sodium sulphite, 0.2 4'IZ1YEIOgbGnzenesulphate'hydmqumone developer g of l-phenyl-B-pyrazolidone, 6 g of hydroquinone, 35 The i m age dyestuff is bleached in a bath which in g anhfidmgjs g g carboriate 4 g of potassium bror it i i n 0. nztriazo e; r 1,000 parts by volume contains 30 to 100 parts by volg f 32% striengtih hydrochlonc acid 40 to 120 parts 3. 6 minutes fixing in a solution of 200 g of crystalline of potassipm bromide 30 F 50 Parts of thiourefa and sodium thiosulphate and 20 g of potassium metabi- 0.00] to 0.01 parts of 2-arnmo-3-hydroxyphenazme, as Sulphite in 1 litre of water;

a function of the amount of silver present. 5 minutes soaking.

g f g z gl ;5% the 2 silver 15 5. 3 to 12 minutes colour bleaching by means of a solgfr '8 J l fg i i g 298:2: lution which per litre of water contains 50 to 80 g of P0- strength hydrochloric acid. The material is finally fixed 001 g of 2 amino 3 hydr0XypheI;azine. in the usual manner. A yellow colour wedge is obtained 10 minutes soaking. which represents image complementary to the Origi 7. 5 minutes bleaching of residual silver by means of S l r Wedge d wh is completely bleached in a solution of 60 g of crystalline copper sulphate, 80 g the areas of originally the highest silver density. Such of potassium bromide and 15 mlof 30% strength a ylellow image may also be part of a mult i-colour matedrochloric acid per litre of water; rla t i 8. 5 minutes soakm Similar results are obtained if instead of the dyestuff 9' 5 minutes fixing i specified under 3; No. 1 another dyestuff of No. II to LXV of Tables I to 1Q sminuts Soaking V] is used A light-stable positive viewing image of the permanence required for documents is obtained.

Similar results are obtained if instead of the dyestuff EXAMPLE 13 No. III another dyestuff of No. I, II or IV to LXV is used. The following layers are successfully applied to an We claim:

opqaue white acetate filrn provided with an adhesi l. Photographic light-sensitive material which comlayer: prises, on a support, at least one silver halide layer and 1. Silver bromide emulsion in gelatine, sensitive to red, containing the greenish-blue dyestuff of formula mula SOaH q 2. Colourless gelatine layer without silver halide. in which U is hydrogen, halogen, alkyhalkoxy, hydrox- 3. Silver bromide emulsion in gelatine, sensitive to yalkoxy, alkoxyalkoxy, carboxyalkoxy or acylamino, V green, containing the purple dyestuff of formula is hydrogen, alkyl, alkoxy or acylamino, acyl in U and I -OH H038 802B 038 son;

at least one layer contains an azo dyestuff of the for- V is derived from an alkyl or hydroxyalkyl carboxylic acid, alkylendicarboxylic acid or from benzene, pyridine, furan or thiophene carboxylic acid or substituted R is alkyl having 1 to carbon atoms, phenyl or benbenzene carhoxylic acid, the substituents being alkyl, zene substituted by alkyl having 1 to 5 carbon atoms, alkoxy, halogen or nitro, A and E each is R,-CO- or 5 alkoxy having 1 to 5 carbon atoms, sulfonyl or chlorine, an R -SO wherein R, is hydrogen, alkyl, halogen al- D" is -CO-, COF -CO 0r -SO -F -SO in which F kyl, phenylalkyl, alkoxy, carboxyalkyl, vinyl, benzene, is alkylene having 2 to carbon atoms, benzene, fufuran, thiophene, pyridine, or benzene substituted by P E B, pyridine, diphenylsulfone, -CH CH- alkyl, alkoxy, halogen, nitro, halogenalkyl or sulfonyl, 0r benzene substituted by amino, nitro, sulfonic acid or R is alkyl, benzene or benzene substituted by alkyl, 10 sulfonic acid amide; 3 is benzene, 5- s' is 3 alkoxy or halogen, D is pyrimidine, 1,3,5-triazine, radical of the formula 1,3,5-triazine substituted by hydroxyl, halogen, alkoxy 7 having 1 to 5 carbon atoms, phenylamino or alkylamine having I to 5 carbon atoms, -CO-, -CO-F-CO- or -80 F,-SO wherein F is alkylene, benzene, furan, thiophene, pyridine, diphenylsulfone, -CH CH- or substituted benzene, the substituents being amino, nitro, sulfonic acid or sulfonic acid amide; F, is benzene or substituted benzene, the substituents being amino, nitro, sulfonic acid or sulfonic acid amide, -D -N N-D represents a radical of the formula rine, nitro or chloroalkyl having 1 to 5 carbon atoms,

and p and q each is l or 2.

3. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula SOZH in whichU is hydrogen, alkyl having 1 or 2 carbon atoms, alkoxy having 1 or 2 carbon atoms, hydroxyalkoxy having at most 3 carbon atoms, carboxyalkoxy hav- Q ing at most 3 carbon atoms, or acylamino, V is hydrogen, alkyl having 1 or 2 carbon atoms, alkoxy having 1 or 2 carbon atoms or acylamino, acyl in U and V being derived from an alkyl carboxylic acid having at most 3 carbon atoms or from an alkylene dicarboxylic acid having 2 to 6 carbon atoms, A, and E each is R CO- or R,,-SO in which R, is alkyl having 1 to 3 carbon atoms, phenyl, alkylphenyl having 1 to 3 carbon atoms in the alkyl radical or thiophene, R is phenyl or alkylphenyl having 1 to 3 carbon atoms in the alkyl radin which Q is hydrogen or alkoxy having 1 to 5 carbon atoms, and p and q each is l or 2.

2. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula D5-N HN Vi Li a) (v-l)(q-1) S0311 l in which U, is hydrogen, chlorine, alkyl having 1 to 5 carbon atoms, alkoxy having 1 to 5 carbon atoms, hydroxyalkoxy having 1 to 5 carbon atoms, alkoxyalkoxy having twice 1 to 5 carbon atoms, carboxyalkoxy having 1 to 5 carbon atoms or acylamino, V, is hydrogen, alkyl having 1 to 5 carbon atoms, alkoxy having 1 to 5 carbon atoms or acylamino, acyl in U, and V, is derived from an alkyl carboxylic acidhaving l to 5 carbon atoms, or an alkylene dicarboxylic acid having 2 to 10 carbon atoms, A and 15;, each is R -CO- or li -SO wherein R is hydrogen, alkyl having 1 to 5 carbon =N atoms, chloroalkyl having 1 to 5 carbon atoms, phenylalkyl having 1 to 5 carbon atoms in the alkyl radical,

alkoxy having 1 to 5 carbon atoms, carboxyalkyl having and p and q each is 1 or 2.

l to 5 carbon atoms, vinyl, benzene, furan, thiophene, 4. Photographic material according to claim 1 in pyridine or benzene substituted by alkyl having 1 to 5 which one layer contains an azo dyestuff of the formula furan, thiophene, pyridine, diphenylsulfone or -CI-[ CH, -D -N N-D is a radical of the formula carbon atoms, alkoxy having I to 5 carbon atoms, chlo- V ical, D is -CO-, -CO-F -CO-, in which R, is benzene,

(-Az) OCSOz-CO-, -N=N NH $01k Cl HN v ('1 (El) l N 1/ N 03H 5 OGCH=CH-OO, (I3 1 I 1 or m which U, V, A and E have the significance indi- N N cated in claim 1. C0-

5. Photographic material according to claim 1 in l which one layer contains an azo dyestuff of the formula OCH8I 'MWWMN (11H: N h V M mo -c0-HN -N=NNHC 0-6 I OCH: OaH

U v U is hydrogen, methyl, methoxy, carhoxymethoxy or 6. Photographic material according to claim 1 in carboxypropionylamino and V is hydrogen, methyl, which one layer contains an azo dyestuffof the formula methoxy, hydroxyethoxy or acetylamino.

(Ez) SOsH injwhich U, V, A E 'andb' have the significance in di 8 Photographic material according to 15m l in catd in claim 1. which one layer contains an azo dycstuff of the formula 7. Photographic material according to claim 1 in l -HN a S0311 g 2-00 soaH 2 Q Photographic material according to claim 1 in 40 which one layer contains an azo dyestuff of the formula in which A is acetyl, benzoyl, ptoluyl, p-tosyl or thienyl, D is a radical of the formula n a H015 f -co, -oooo v N==N- NH 0 o -o o- C 0 i HaCG0-HN on,

03H 2 JL J l J L T01 r b diagram; wean according tdcliiim 1 in s O \N which one layer contains an azo dyestuff of the formula U 7' A S0311 soar U MM" l (-A'z) -HN -N=N N=N NH- v v NH-DHN v l t i (-132) S0311. soflH I in which U, v, A,, Eg'ala i) 115v; he ig1iriEHe indicated in claim 1. 0,s N=N -so,, 1 11. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula -on, SOJH 31 32- 12. Photographic material according to claim 1 halogen, and U, V, A and E have the significance inwhich one layer contains an azo dyestuff of the formula dicated in claim 1.

Ho s i U i a! I a (-A N=N-NHDHN HN V N=NNH- l 2) SOaH H 3 in which D is l,3,5-triazine, pyrimidine, substituted l3. l hotographic material according to claim 1 in 1,3,541fiaZiIie Substituted pyr in th SubStitUent which one layer contains an azo dyestuff of the formula being alkoxy having 1 to 5 carbon atoms; hydroxyl or l 1103s 0m \N som H0 H035 OCHzCHaOH 

2. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 3. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 4. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 5. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 6. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 7. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 8. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 9. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 10. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 11. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 12. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula
 13. Photographic material according to claim 1 in which one layer contains an azo dyestuff of the formula 